Kujaku

Kujaku is a patterned metallic koi, valued for the combination of bright Hikari luster, orderly reticulation, and orange or red pattern.

Real kujaku koi photograph 1.
Real koi photo from Wikimedia Commons: Kujaku2. Credit: Maxikoi, CC BY-SA 3.0. Source.
Real kujaku koi photograph 2.
Real koi photo from Wikimedia Commons: Doitsukujaku. Credit: Maxikoi, CC BY-SA 3.0. Source.

How to identify Kujaku

  • Metallic shine should be visible across the head, body, and fins.
  • Reticulation gives the body a pinecone-like pattern.
  • Orange or red markings sit over the metallic reticulated ground.

Quality points

  • Luster should be even; a dull head or fins weakens the impression.
  • Reticulation should be orderly from shoulder to tail.
  • Pattern should support the body shape instead of hiding it.

Common comparison

Compare Kujaku with Ogon. Ogon is single-color metallic; Kujaku adds reticulation and a patterned overlay.

Look first atGood signBeginner caution
BodyBalanced frame, smooth swimming, no deformity.Do not let rare color hide weak conformation.
Skin and colorClean, readable, and consistent for the variety.Muddy color usually becomes more distracting with size.
Scale or luster traitEven rows, sparkle, reticulation, or metallic quality depending on the group.Random patches, dull fins, or broken scale rows reduce impression.

Sources and editorial note

This page follows the variety structure used by Japanese koi references and the book notes in the My Koi Garden research library, especially the distinction between true variety groups and cross-cutting traits such as Doitsu and Gin Rin. Photos are limited to real images with source and license notes.